Mining-machine.



No. 700,466A Patented May 20, |1902.

- l M. B. WYLIE. 4

MINING MACHINE.

(Appucacion med Apr. 2s, 1900.1 (No Model.) f 4 Sheets-Sheet l.

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M` B. W'YLE.

Mmm@ MACHINE.

(Applicatiop led Apr. 28, 1900.) (N0 MOBL) 4 Sheets-Sheet 2.

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No. 700,466. Patented May 20', |902. l M. B. WYLIE.v

` MINING MACHINE.

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. vzlfeyrgzys No. 700,466. Patented may 20, |902. M. B. WYLIE. MININGMACHINE.

(Applicatonled Ap r. 2s, 1900.) v Y 4 Sheets-Sheet 4.

A(N0 Modei.)

MORRIS PETERS co.. num-uma wLmNYoN D c UNITED STATES LPATENT @nmol-.

MARSHAL B. WY'LIE, OF PARIS, ARKANSAS.

MINING-MACHIN.

SPECIFICATION formingpart of Letters Patent No. 700,466, dated May 20, 1902.

Application Bled April 23, 1900.

To aZZ whom t may concern: l `A h 1 Y y vBe it known that LMARSHAL B. WYLIE, a citizen of the United States, residing at Paris; in the county of Logan and State of Arkansas, have invented a new and useful Mining- Machine, of which the following'is a specifi-A cation.

Thisinvention relates to mining-machines in general, and more particularly to that class in which the cuts are made by means of a reciprocatory drillwhich is movably mounted andis adapted for adjustment to make the mining cuts, aswell as the shear cuts, the object of the invention being to provide a simple and effective mechanism in which lateral swing-v `ing motion will be given to the drill-carriage to similarly move the drill andin which vertical swinging movement may also be given t the carriage and to the drill, the change in .be operated by hand' from the rear or from the side of the machine or may be operated l from the rear and theside simultaneously and ally.

in which, furthermore, the carriage may be advanced as the cutting progresses and may' be adjusted bodily, both vertically and later- Further objects and advantages of the invention will be evident, from the following description and include the' formation of spe-` cial drill-bits for the mining and shear cuts, WhichV will not clog, and the provision of. means for clearing out the cuts as they areA made. I

`In the drawings forming a portionof this,- speciiication, and in which like numerals of reference indicate similar parts in the several Views, Figure 1 is asideelevation showing the complete machine vvith the parts adjusted for making the mining cut-the machinegto be operated from the rear` orffrom theside or at lboth points simultaneously. Fig. 2 is a .reverse view of-Fig. 1. v Fig. 3 is a top plan View of the complete machine in the position shown in Fig. 1. `Fig. 4 is a front elevation sentiranno?. (Nomads.)

ofthemachine.` Fig.5 is aperspective View f the complete machine pivoted for swinging movement ina vertical plane to make the shear cuts. Fig. 6 is a detail elevation showing the spring for `striking the blow when the drill-rod is released and illustrating the adjustable collar for adjusting the tension of the spring. Fig. 7 is a detail elevation of the outer'end of the drill-rod with one form of bit attached thereto and illustrating the form and arrangement of the clearer, this bit being employedin making the mining cut. Fig. 8 is 'a side elevation of the drill-bit shown in Fig. 7, taken at right anline 12 12 of Fig. 7 fand showingthe clearerA for taking out the cuttings during'the drilling operation. Fig.I 13 is a section on line 13 13, Fig. 7.

Referringnow to thedrawings, the miningl machine comprises a substantially rectangular frame including corner-uprigll'ts 20,`Which aretubular in form and eachof Which'has a spike 2l at its lower end to permit secure an-l choring of the'framef-'during thedrilling operation. The tubular corner-.posts each contain a telescopic member22, in the upper ,0nd l of which is engaged a ja'ckfscrew 24, having a pointed upper enl,w`hereby the telescopic upper endsinto the roof. :The telescopic sections are held inutheir adjusted positions by means of set-screws 25, which are passed l Vof thefcorner-posts, respectively, thecollars being split and havingv their ends extended outwardly and parallel to inclose upper andv lower brace-bars 28 and 29, respectively,

which extend from the front corner-posts to y. the'rear corner-posts of the frame-thatis, f

fore and aft of the machine. These braces are made of angleerails preferably to give greatest strength.

Connecting the upper brace bars or rails 28 is a lateral brace 30, which rests at its ends upon the brace-rails and is prevented from displacement therefrom by means of U shaped yokes 3l, which engage around the under sides of rails 28 and have their extremities turned outwardly and secured to the under face of brace 30. The brace 30 is thus slidably connected with braces 28 for movement longitudinally of the latter.

The brace-rails 29 are located slightly above the lower ends of the corner-posts, and a crossbrace 33 is disposed with its ends upon these rails, said brace 33 having yokes 34 secured to its ends, which yokes engage the rails 29 slidably. The braces 30 and 33 are connected by upright braces 34 and 35, the ends of which are turned laterally and bolted to the braces 30 and 33, whereby they may be adjusted longitudinally of braces 30 and 33 when desired. The uprights 34 and 35 act also to pivotally support the working parts of the machine during the vertical or shear cuts, the pivotal bearings of the uprights being located at the laterally-bent portions 36 and 87 of the uprights. The pivotal mounting of the machine upon these uprights will be hereinafter more fully described.

An additional transverse brace 38 is connected at its ends to the brace rails or sills 29 of the supporting-frame of the machine, this brace consisting of a flat metal plate, which is given a quarter-twist midway of its ends,

as shown at 3f), so that it may lie with its lower edge against the floor of the drift and support the parts with less tendency to bend. The ends ofthe brace 38 lie upon the upper faces of the inwardly-directed flanges of the rails 29 and with their extremities against the vertical portions thereof, so that said braces are prevented from longitudinal displacement. Y

The brace 38 is employed only during the making of the horizontal or mining cuts, at which time it is connected adjacent its ends to the lower brace 33 by means of cross braces or plates 40, the forward ends of which beyondthe lateral brace 38 are bent upwardly, as shown at 4l, for the attachment at oppo site sides thereof of two arc-shaped racks 42 and 43, which are disposed concentric, the use of this pair of racks being hereinafter explain'ed.

The machine proper comprises a frame in-` cluding a number of U-shaped plates, in the present instance three, (shown at 44, 45, and 46,) which are disposed in parallel planes and with their corresponding legs in a common plane, the extremities of the legs being connected by end plates 47 and 48 and side plates 49 and 50,` respectively. Additional side plates 5l and 52 connect the legs at the sides of the machine and below the extremities thereof, so that the frame is made exceedingly rigid and of great strength.

Upon the inner face of one leg of plate 44 is fixed an angular bracket 53, and secured to this bracket is guide-plate 54 for the drill-rod 55, said plate being secured adjacentits rear end to the web of plate 4G, which web is ina plane above the webs of the plates 44 and 45, and the ends of the plate 54 are bent downwardly and are perforated to form slide-bearing for the reciprocatory drill-shaft or drillrod 55.

The plate 54 extends longitudinally of and above the drill and has a longitudinal slot 5G, in which is slidably disposed the lug 57 upon the upper side of the drill-rod, whereby when the lng is engaged and moved longitudinally of the slot the drill-rod, and therewith the drill, will be correspondingly moved.

The drill-rod is held normally in its position to project the drill by means of a helical spring 58, which encircles the drill rod or shaft. This spring is attached at one end to the downturned forward end of the plate 54, while its opposite end is attached to a collar 59, which is slidably disposed upon the drill shaft or rod and is held at different points of its slidable adjustment by means of a setscrew GO. The forward end of the drill-rod is provided with the drill-bit (il, and vthus if the lug 57 be engaged and moved rearwardly and then released the spring will be placed under tension and 'will then by its contraction throw the drill rod or shaft violently forward and strike a blow. In order to thus retract and release the lug 57, a trip-shaft G2 is rotatably mounted in the side plates 5l and 52 of the machine or carriage, this shaft having a lcrank portion G3 bent laterally from a point between its ends and having suc-h position and dimensions that as the shaft is rotated the crank, which forms the trip and will be so hereinafter designated, will engage the lug 57, and thus with the proper direction of rotation of the shaft G2 will be moved rearwardly and retract the drill rod and shaft with the bit that is carried thereby. The shaft Q2 is provided with a fly-wheel G4 to give proper momentum to the apparatus and may also be provided with a band-wheel for engagement by a belt from a suitable source of power. In the present instance, however, I have shown a handoperated mechanism for rotating the shaft 62, this mechanism consisting of a gear-wheel G7,meshingwithapinion 68 upon shaft 62 and which gear 67 is carried by a crank-shaft G9,

mounted in bearings 70 upon the side plates 49 and 50 of the frame of the carriage. The extremities of the shaft (i9 are formed as double cranks or have double cranks secured thereto, as preferred, each of these double cranks comprising an inner portion 73, which extends from the shaft at right angles in the usual manner and has a terminal laterallyextending portion 74, which forms thehandle of the crank. From the end of each handle gular, as shown, the power ends of the levers portion 74, however, there extends a second or outer crank portion 7 5,which has a secondA terminal laterally-extendinghandle 76. lThe handles 76 are adapted to be grasped directly by the operators of the machine to rotate the' meshing gearing and reciprocate the drill-rod in the manner above explained,whi1e the handle portions 74 are connected with operatinglevers. In the present instance two of these operating-levers 77 are employed and are anlying at right anglesto the work'ends thereof andthe levers being fulcrumed adjacent ther point of meeting of the two portions of the lever-sections. The levers 77 are fulerumed at the outer ends of stub-shafts 7 9,'from the outer ends of which extend braces 80, which are connected'also withthe sides of the carriage to hold the stub-shafts rigid. The le-A vers 77 are vheld at the outer ends of the stub-t shafts by means of washers or sleeves 8l, disposed upon said shafts, and at their work ends they arejconnectedwiththe crank-handles 74V by'means of pitm'en 83. Thus by operating the levers 77 with a pump-like motion the crank-shaft will be operated, the cranks being set on the quarterto'prevent coming to a dead-center. Thus it will be seen that by operating either or both of the levers 77 either with or withoutdirectoperation of the cranks the shaft 62 will be rotated andthe trip operated to retract and release the drill-rod.

In executing the miningcut the drill-carriage is 4pivotedvfor lateral swinging move-1 ment, asv above mentioned, the pivotal arrangement being as follows The central plate 45 of the carriage iscontinued above the side plates 49 and 50 and'is' connected at its'l top,' so that it is, in effect, a loop which is substan tially` rectangular in outline and comprisesl an upper end 84 and a lower end 85. Through' these ends 84 and 85 are formed perforations with Which-is engaged a pivot-rod 86, which also pivotally engages perforations in the upper and lower cross-braces 30 and 33 of the main frame of the apparatus. The plate 54 is thus pivotally mounted inthe main frame and may be removed therefrom by withdrawing the rod 86. In order to hold the plate' 45, and therewith the carriage,at different elevations,

a sleeve 86 is slipped on the rod 86 betweenVA the upperfand lower ends 84 and 85 of thev plate 45, and this sleeve' is provided with eollars 87, with which are engaged set-screws 88,' which are passed through the sleeve and into engagement with the'pivt-rod S6. Thus by raising the sleeve the'carriage will be raised,

and by then screwing upthe set-screwsthel carriage will be held in'its raisedpos'ition, the

pivot-rod turning in the perforations in thef bracebars or plates 30 and 33;

. To effect the horizontal pivotal movement.

of the drill-carriage, theracks 42 and 43jare 5 y is pivotally'mounted upon'a supporting@ provided, and coperating with these racks alternately to move the carriage pivotally in oppositedirections is a roekleve'r 90, whichy passed throughlperforations therei'nQas shown. The.bit employed for the mining cutis o'f'fspefA zcialformand is shown'i Figsg7apd 8.of theI a' stock o`r` voigrud at its ends to the legs of the planeet of the carriage. v'lhis lever 90 has afork 9,1 at its forward end, the legs of which hang downwardly and'through'the end'portions of vwhich is passed a pivot-bolt 92, uponwhich is pivoted a double pawl comprising engaging portions 93 and 94, Whichlieat an obtuse angle to each other and are positioned to diverge downwardly. One member. 93 is offset from the other member 94, so that as the double pawl is tilted on its pivotone'member and then the other will engage its respective rack, and to thus tiltthe pawl a rocker 95is pivoted to an ear 96 upon the forward end of the lever-'90, and the' ends thereof are Yconnected 'with the pawl members 93'and94 through the medium of connecting rods or bolts 97and 98. TheY upper ends of these connecting-rods are pivotedto the rocker, and the lower'headed- 'ends are engaged with slots inthe 'pawl mem,

bers, said slots being of such dimensions as to permit rocking movement of the rods therein.

The pivot of the rocker permits operative movement of the latter, and in order tothus move the rocker to engage its pawl members` alternately with theirrespective racks ,this

pivot of the rocker isl extended rearwardlyin` the form of an operating-shaft'tothe rear side of thecarriage, where it is provided with an operating-handle 99, by means of whichit is rocked,'the shaftibeing shown at 100. Thus it will-be seen that-if shaft 100 is operated to p engage pawl member 93vwith its rack u42 and IOC the rock-lever 90 is then operated th'ecarriage will be pivotally moved 'to theright, and

vif the pawlmember 94`be then engaged-with;

rack 43 then the carriage Wllbe swung to the', left,l so that the drill-rod,and'therew'ith the'l drill, will be correspondingly movedin the are of a circleand with' the pivotr'od as acenter.

To facilitate this movement, thepivot-'rod Sd may be provided with` ball-bearings.

In order to rock the lever 90, adru'm lOl-is V11o fixed on the' crank-shaft or trip-'shaft 6,2; lidi ithis drum has a cam-groove' 102,'i'n which i's engaged the rear endof thelever'. Thus sf I lthe trip-shaft is rotatedin the xnannerabve described the rock-lever will'ibevoscillate'd ory rocked,causing the operative. pawl member.

thereof to alternately vengage azildslidffreely'A over the teeth 'of its respective rack.:M A,

' To the outer end 'ofdthe drill-rod is'secu'redf the drill-bit G1, which ,may4 be attached inth'e manner' shown, which consists in shitting the end of the bit to receive` theweb IOG'fatthe4 end 0f the, rod, the tin' @narod beinggheiu in their assembled positions byineans ofilbolts drawings. This bit` consists of tion 107, the outer. end of whle formrmembers 108 and 109, the outer" ends which are bent outwardly o present or a flaring constructie' Athe member two sides of an octagon, the diameters of the octagons constantly decreasing from the base to the point of the tooth, such a section being shown in Fig. 12. This pick or bit is flat on one face and is placed with this fiat face vertical, so that the flare of the bit or pick will be toward the upperrand lower sides of the horizontal or mining cut. With suoli a form of bit or pick it is found that there is no clogging of the slack in the cut around the pick or drill to an extent sufcient to prevent operation; but in order to completely remove all slack, and thus increase the eiiiciency of the machine, there is employed a clearer (shown in Figs. 7 and 12 of the drawings) and which clearer consists of a shovel-blade 110, having a handle or stem portion 111, which is pivoted between the ends of a collar 112, which encircles the drill shaft or rod adjacent the base ofthe bit or pick. This shovel hangs normally with the blade thereof downwardly and with the beveled upper end of the handle or stem portion against the under side of the drill-rod, but is free to move pivotally and fold against the drill-rod. The shovel extends rearwardly of the drill-rod, so that as the drillor pick is moved inwardly the shovel will yield and hinder the movement thereof; but when the rodis moved outwardly to withdraw the bit or pick the shovel scrapes against the lower side of the cut or depends to move close thereto and by engaging the slack moves it rearwardly from the cut. In this manner the cut is kept cleared.

In Fig. 5 of the drawings the machine is shown in perspective in its position for making the vertical or shear cuts. At such times the supporting-braces 40 are removed and therewith the racks 42 and 43, while the uprights 34C and 35 are reversed to cause their laterally-projecting portions 36 and 37 to project toward each other, the upright 37 being shifted along the cross-braces 30 and 33 until said portions 3G and 37 are brought to lie against the outer faces of the plates 51 and 52 of the drill-carriage. The carriage is raised from the cross-brace 33, so that plates 5l and 52 will thus lie in contact with the portions 36 and 37, and through said portions and plates is passed a pivot-bar 113 in a horizontal plane, whereby the carriage may be moved pivotally in a vertical plane and cause the drill bit or pick to effect the shear cut, the carriage being oscillated by hand. v

The pick or bit 115, which is used in making the shear cuts, is somewhat different from that employed for the mining cut in that it has four prongs or teeth instead of only two, but, on the other hand, is similar in that it has substantially two of the former bits or picks disposed face to face, with their beveled sides adjacent. The angles of the inner bevels of the teeth are, however, right angles in planes at right angles to the aXis of the pick or bit instead of obtuse angles, as in the former instance. With this bit or pick no points of the cut are omitted and a continuons cut is secured, the slack falling away from the points or teeth, and thus preventing clogging. In each instance-that is, in cutting both the horizontal and the vertical cuts--it is of course necessary to advance the carriage `to correspondingly move the drill or pick, and

for this purpose the upper edge of the vertical flange of theA rail 29 at each side of the main supporting-frame is serrated to form ratchet-teeth 116, which slant in the direction of the front of the machine. Upon the cross-brace 33 is pivoted a rock-shaft 117, having an operating-lever 118 conveniently disposed for operation, and the ends of the rock-shaf t are turned laterally to form cranks `119, to the extremities of which are pivoted gravity-pawls 120, disposed for engagement with the racks. Thus as the lever 118 is operated the shaft 117 is rocked and the pawls are reciprocated to engage and press against the teeth, so that the cross-brace 33, which is, in eect, a carrier, is moved along the rails 29 to advance the carriage, the cross-brace 30 at the same time sliding along the upper pieces 28. After each cut is made the lever 11S may be operated to raise the pawls from the ratchets, when the carrier or cross-brace 33 may be drawn rearwardly with the drillcarriage and the machine may be manipulated for another cnt.

What is claimed is-- l. A mining-machine comprising a fixed main frame, separate supporting devices adapted for interchangeable connection with the main frame, and a drill-carriage constructed and arranged for connection with the supporting devices interchangeably for pivotal movement in different planes at angles to each other.

2. In a mining-machine, the combination with a main frame including rails, of a carrier slidably engaged with the rails, a drillcarriage mounted upon the carrier for pivotal movement, and provided with drill-actuating mechanism comprising a manually-operable element, means connected with said manually-operable element for moving the carriage pivotally and means for advancing the carrier along the rails and including a pedal disposed in proximity to the manually-operable element of the drill-actuating mechanism,

IIC

whereby one man may operate the drill, swing interchangeable pivotal mounting to oscillate. in dierent planes, opposing racks, opposing pawls adapted for alternate engagement with their respective racks and operably connected With the drilling .mechanism for move? mentl over the racks, `and means for throwing the pavvls alternately into operative relation totheir respective racks., i y Y 5. A mining-machine,eomprisingacarriage adapted for pivotal movement, va drill mounted upon the carriage for movement therewith and having operating mechanismpopposing racks, opposing pawls operably connected with the drill-operatingmechanism for engagement with the racks to pivotally'move the carriage, and meansfor moving the pawls alternatelyinto engagement With their respective racks. Y e' I 6. Amining-machine eoniprisingacarriage adapted for pivotal movement, a drill mounted uponv the carriage for movement therewith and having operating means comprising a Shaftallever pivoted upon the carriage and having cam connection with the'shaft foroscillation thereby,*opposingv pavvls mounted upon the lever, opposing racks for engagelment by the. papvvls` alternately 'to pivotally move the carriage in opposite directions, and means yfor moving the pawls alternately into operative relation'to'their respective racks.

7. A mining-machine comprising Ya' marin .su pporting-'frame including u prights and connecting-rails, a carrier 'slidrably engaged with the rails to permit the carrier to be advanced and retracted, 4separate supporting devices adapted for interchangeable 'con nection with the carrier, and a drill-carriage constructed .and arranged for connectinwith the supportsinterchangeably for pivotal movement in different planes lying' at angles to'each other. Y

8. A-miningmachine comprising a"main supporting-frame'including uprights and connecting-rails, a carrier slidably engaged with the vrails to permit the carrierto be advanced and retracted, separate supporting devices adapted for interchangeablerconnection with the carrier and at both ends thereof, anda drill-carriage constructed and arranged for connection withthe supports interchangeably vfor-pivotal movement indifferent planes at angles to each other. y

9. In a drilling meehanism,the combination with Va pivotally-mounted'drill-carriage and a reciprocatoryY drill mounted therein, of a rack adjacent to the carriage, a cam-shaft mountedin the carriage andprovided with acam, alever engaged With the cam and h avignga pawl in operative relation to the rack ,torotate the carriage whenthe lever isactuated, said shaft having means for engagement with the drillto retract it, means for moving the drill forwardly When ,released by its `retracting means, and means for actuating the shaft.v

10. In a drilling 'mechanism`,.the combination with a pivotally-mounted carriage and a reci procatory drill mounted therein ,Y of Vracks jerank.

disposed adjacent to the carriage and hav-l ing their teethfarranged in opposition, a shaft mounted in the carriage and provided with a cam, a lever p'ivoted on thev carriage andl engaged with the cam for oscillation thereby, pawls carried by the lever for alternate engagement with their respective racks, means for actuating the shaft and `means for throwing the paWIsaIernateIy'into operative relation to their respective racks.

'1-1. In a drilling mechanism, the combination ivith a pivotally-mounted drill-carriage and a reciprocatory'drill mounted therein,of

opposing'racks disposed adjacent to, the carriage, a shaft mounted in, the carriage and provided With a. cam, a lever pivoted onthe l lation thereby, a rocker mounted on the leconnectionv with the `rocker for movement thereby toalternately engage their respective racks, means for actuatingthe roekena finger on the drill, a crank on the cam-shaft adapted to engage the finger to move the drill `in one direction, means for returning the .carriage andl engaged with the cam for oseil- .85 ver, pawls pivoted'to thedever and' having drill whenreleased bythe crank, operatingcranks for the cam-shaft', and handy-levers con nected with the operating-cranksforrotating the shaft. f J

` l2.. A mining-machine comprising areciprocatory drill-'rod-provided with a lug, a tripshaftY having. a trip for engagement Withfthe lug to retract the drill-rod', meansV for returning Vthe rod, a crank-shaft provided with dot1- ble "cranks," intermeshing gears upon 'the crank-shaft and trip-shaft, a 'handle for one IOS element lof each crank",an d a'rockingflever yconnected Withl the second eleme'nt of each 13. Y A mining-ma'ehing'l comprising a` pivot- Aved carriage, a reciproeatory drill mounted in 'the 4carriage and provided with a lugLatripshaft mounted in the carriage and havinga trip for engagement with`l the lug to retract the drill, meansl vfor returningthe drill when released'by the trip','means for operating'the trip 4- shaft, and means operably connected withthe trip-shaft for lnovin'g the carriage 'pivotally.

14( A mining-machine,comprising a p ivot- Y ed carriage, a reciprocatory drill mou'ntedin Vthe carriage, a trip-shaft havinga trip)v for engagement with the drillto retract it, means vfor returning the drill when released'byt the trip, a rack, a pivotedlever operably connectedwith the trip-shaft for pivotal movement thereby, and a pavvloarriedf'by'thelever in operative relation to Vthe `rack' to movethe 'carriage pivotally'.

" 15. A mining-machine comprising a main frame including'v upper Vand lowfer members and Y uprights "removably connected thereto, said u'p'rig'hts havin gpivotf-bearings, a removable pivot-rod'l engagedwith `the upper-and Alower, members, and adrill-carriage,mounted on the rod removably and 'adapted for' pivotal connection vvith theuprights. y, ,A

16. A mining-machine comprising a main frame including upper and lower members and uprights removably connected thereto, a removable pivot-rod engaged with the upper and lower members, a drill-carriage adjustably mounted on the pivot-rod and removable therefrom, said uprights being adapted for attachment to lie adjacent to the sides of the carriage and adapted for pivotal connection with the carriage when the pivot-rod is removed.

17. A drill-bit for mining-machines, comprising a rectangular stock having two pairs of diverging teeth at one end thereof, the points of said teeth lying withoutthe planes of the side faces of the stock, each of the teeth being pyramidal in form, having rectangular bases and being disposed with the mutually-adjacent edges of their bases on two lines, lying in the same plane and intersecting each other at right angles, said teeth being clear of one another from base to point, substantially as described.

1S. A machine of the class described comprising a main frame, a carrier mounted for longitudinal movement in said main frame, a drill-carriage and removable pivotal supports, disposed at right angles to each other, to mount said carriage on said carrier, whereby said carriage may be pivotally mounted to be swung either horizontally or vertically, substantially as described.

19. In a machine of the class described, the combination of a relatively fixed support, a carrier movable longitudinally thereon, and meansincludinga pedal-lever to advance said carrier; a drillcarriage mounted for pivotal movement on said carrier, and a drill-operating mechanism in said carrier and having Vhand-levers, whereby the carrier may be advanced, and the drill operated by a single operator manually, substantially as described.

' 20. In a machine of the class described, the

combination of a relatively fixed support, a carrier movable longitudinally thereon, and means, including a pedal-level', to advance said carrier, a d rill-carriage, mounted for pivotal movement on said carrier, a drill-operating mechanism in said carriage, and having handlevers,and means operated by said drilloperating mechanism, to automatically swing said drill-carriage pivotally, whereby the carrier may be advanced, the drill-carriage pivotally swung, and the drill mechanism simultaneously operated manually by a single operator, substantially as described.

2l. In a machine of the class described, the combination ofa main frame, acarrier mounted for longitudinal movement in said main frame, a drillvcarriage and removable pivotal supports, disposed at an angle to each other, to mount said carriage on said carrier, Whereby said carriage may be pivotally mounted to be swu ng in correspondiugly-angled planes, and a reciprocating drill and operating mechanism therefor, with which said carriage is provided, substantially as described.

22. In a machine ofthe class described, the combination of a relatively fixed support, a carrier movablelongitudinallythereon,meaus to advance said carrier,a d rill-carriage mount' ed for pivotal movement on said carrier, and a drill-operating mechanism in said carrier and levers with which said carrier-advancing means and drill-operating mechanism are provided, whereby they may be operated manually, by a single operator, substantially as described.

In testimony that I claim the foregoing as my own I have hereto alixed my signature in the presence of two witnesses.

MARSI'IAL B. XVYLIE.

lVitn esses:

L. S. BiETHAN,

ino. V. CHANDLER. 

